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fish tank water to have a faint fishy smell. Fish will have a little fishy smell, as long as the taste is not heavy, the water is not muddy, there is no problem. If the water is muddy, it means that there is a problem with the water quality. It may be that the ammonia nitrogen content exceeds the standard, which will cause toxicity to fish. Therefore, it is necessary to change the water regularly, or establish a good nitrification system, or consider planting some aquatic plants.

Two, fish tank water fishy how to do

1, regularly change water: fish tank water fishy, the best way is to regularly change water. Changing water is a necessary step in fish farming, which can not only improve water quality, but also increase dissolved oxygen, which is very beneficial to the health of fish. The cycle of water change is usually one week, and each time can not exceed one third.

2. Supplement oxygen: If there are a lot of anaerobic bacteria at the bottom of the fish tank, it will also cause the water to have a fishy smell. At this time, what we need to do is to supplement oxygen to inhibit their growth. The simplest way to oxygenate is to use an oxygen pump to connect the outlet pipe to the cylinder and open it for 24 hours.

3. Reduce feeding: There is too much organic matter in the water, and ammonia nitrogen produced after decomposition is the main source of fishy smell. Organic matter is the fish food we usually feed. By reducing feeding, the fishy smell can also be reduced, and the deterioration of water quality can also be curbed.